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// Example of using the GeographicLib::OSGB class
#include <iostream>
#include <iomanip>
#include <exception>
#include <string>
#include <GeographicLib/OSGB.hpp>
#include <GeographicLib/DMS.hpp>
using namespace std;
using namespace GeographicLib;
int main() {
try {
{
// Sample forward calculation from
// A guide to coordinate systems in Great Britain
double
lat = DMS::Decode(52,39,27.2531),
lon = DMS::Decode( 1,43, 4.5177);
double x, y;
OSGB::Forward(lat, lon, x, y);
string gridref;
OSGB::GridReference(x, y, 2, gridref);
cout << fixed << setprecision(3)
<< x << " " << y << " " << gridref << "\n";
}
{
// Sample reverse calculation
string gridref = "TG5113";
double x, y;
int prec;
OSGB::GridReference(gridref, x, y, prec);
double lat, lon;
OSGB::Reverse(x, y, lat, lon);
cout << fixed << setprecision(8)
<< prec << " " << lat << " " << lon << "\n";
}
}
catch (const exception& e) {
cerr << "Caught exception: " << e.what() << "\n";
return 1;
}
return 0;
}
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